Hi Gary -
Ok, the article on the dowel bolts is in installment 23 of Roger Moment's
restoration series, in the September 2008 issue of Austin Healey Magazine.
The 100 Dowel bolt is a 3/8" BSF bolt with a special 0.374" diameter shank
that fits into the 0.375" holes in the 7 o'clock and 1 o'clock positions.
These positions have a slight recess on the casting, and the bolts are just
a bit shorter than the standard bolt. The bolt head is unique and has only
two flats cut in a round head, rather than your standard hex head. The UNF
dowel bolt used on later cars is adaptable to the need, however, (the shank
is the same diameter, but a bit longer in length) so they can be used if
necessary, probably by putting one or two washers under the head.
Hope that helps
Alan
On Thu, Jul 14, 2011 at 12:16 AM, <warthodson@aol.com> wrote:
> At our local club meeting last night, a member was inquiring about a source
> for the two transmission bellhousing dowel bolts for a BN1. I would like to
> know the size of these bolts (specifications), OE part # & a source, if
> available.
> Thanks,
> Gary Hodson
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